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Finding the Fourth Proportional to 2,275.68, 3,413.26 and 715.62

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Solution

The fourth proportional to 2,275.68, 3,413.26 and 715.62 is: 1,073.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.68 : 3,413.26 = 715.62 : x
  2. Step 2: Convert to fraction form
    2,275.68/3,413.26 = 715.62/x
  3. Step 3: Cross multiply
    2,275.68x = 3,413.26 × 715.62
  4. Step 4: Simplify right side
    2,275.68x = 2,442,597.12
  5. Step 5: Solve for x
    x = 2,442,597.12/2,275.68
  6. Step 6: Final answer
    x = 1,073.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.